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This commit adds CEL evaluation. Users are able to use CEL in WhenExpression if the feature flag enable-cel-in-whenexpression is enabled.If the evluation is false, the PipelineTask will be skipped. Signed-off-by: Yongxuan Zhang [email protected]
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154
examples/v1/pipelineruns/alpha/pipelinerun-with-cel-when-expressions.yaml
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apiVersion: tekton.dev/v1 | ||
kind: PipelineRun | ||
metadata: | ||
generateName: guarded-pr-by-cel- | ||
spec: | ||
pipelineSpec: | ||
params: | ||
- name: path | ||
type: string | ||
description: The path of the file to be created | ||
workspaces: | ||
- name: source | ||
description: | | ||
This workspace is shared among all the pipeline tasks to read/write common resources | ||
tasks: | ||
- name: create-file # when expression using parameter, evaluates to true | ||
when: | ||
- cel: "'$(params.path)' == 'README.md'" | ||
workspaces: | ||
- name: source | ||
workspace: source | ||
taskSpec: | ||
workspaces: | ||
- name: source | ||
description: The workspace to create the readme file in | ||
steps: | ||
- name: write-new-stuff | ||
image: ubuntu | ||
script: 'touch $(workspaces.source.path)/README.md' | ||
- name: check-file | ||
params: | ||
- name: path | ||
value: "$(params.path)" | ||
workspaces: | ||
- name: source | ||
workspace: source | ||
runAfter: | ||
- create-file | ||
taskSpec: | ||
params: | ||
- name: path | ||
workspaces: | ||
- name: source | ||
description: The workspace to check for the file | ||
results: | ||
- name: exists | ||
description: indicates whether the file exists or is missing | ||
steps: | ||
- name: check-file | ||
image: alpine | ||
script: | | ||
if test -f $(workspaces.source.path)/$(params.path); then | ||
printf yes | tee $(results.exists.path) | ||
else | ||
printf no | tee $(results.exists.path) | ||
fi | ||
- name: echo-file-exists # when expression using task result, evaluates to true | ||
when: | ||
- cel: "'$(tasks.check-file.results.exists)' == 'yes'" | ||
taskSpec: | ||
steps: | ||
- name: echo | ||
image: ubuntu | ||
script: 'echo file exists' | ||
- name: task-should-be-skipped-1 | ||
when: | ||
- cel: "'$(tasks.check-file.results.exists)'=='missing'" # when expression using task result, evaluates to false | ||
taskSpec: | ||
steps: | ||
- name: echo | ||
image: ubuntu | ||
script: exit 1 | ||
- name: task-should-be-skipped-2 # when expression using parameter, evaluates to false | ||
when: | ||
- cel: "'$(params.path)'!='README.md'" | ||
taskSpec: | ||
steps: | ||
- name: echo | ||
image: ubuntu | ||
script: exit 1 | ||
- name: task-should-be-skipped-3 # task with when expression and run after | ||
runAfter: | ||
- echo-file-exists | ||
when: | ||
- cel: "'monday'=='friday'" | ||
taskSpec: | ||
steps: | ||
- name: echo | ||
image: ubuntu | ||
script: exit 1 | ||
finally: | ||
- name: finally-task-should-be-skipped-1 # when expression using execution status, evaluates to false | ||
when: | ||
- cel: "'$(tasks.echo-file-exists.status)'=='Failure'" | ||
taskSpec: | ||
steps: | ||
- name: echo | ||
image: ubuntu | ||
script: exit 1 | ||
- name: finally-task-should-be-skipped-2 # when expression using task result, evaluates to false | ||
when: | ||
- cel: "'$(tasks.check-file.results.exists)'=='missing'" | ||
taskSpec: | ||
steps: | ||
- name: echo | ||
image: ubuntu | ||
script: exit 1 | ||
- name: finally-task-should-be-skipped-3 # when expression using parameter, evaluates to false | ||
when: | ||
- cel: "'$(params.path)'!='README.md'" | ||
taskSpec: | ||
steps: | ||
- name: echo | ||
image: ubuntu | ||
script: exit 1 | ||
- name: finally-task-should-be-skipped-4 # when expression using tasks execution status, evaluates to false | ||
when: | ||
- cel: "'$(tasks.status)'=='Failure'" | ||
taskSpec: | ||
steps: | ||
- name: echo | ||
image: ubuntu | ||
script: exit 1 | ||
- name: finally-task-should-be-skipped-5 # when expression using tasks execution status, evaluates to false | ||
when: | ||
- cel: "'$(tasks.status)'=='Succeeded'" | ||
taskSpec: | ||
steps: | ||
- name: echo | ||
image: ubuntu | ||
script: exit 1 | ||
- name: finally-task-should-be-executed # when expression using execution status, tasks execution status, param, and results | ||
when: | ||
- cel: "'$(tasks.echo-file-exists.status)'=='Succeeded'" | ||
- cel: "'$(tasks.status)'=='Completed'" | ||
- cel: "'$(tasks.check-file.results.exists)'=='yes'" | ||
- cel: "'$(params.path)'=='README.md'" | ||
taskSpec: | ||
steps: | ||
- name: echo | ||
image: ubuntu | ||
script: 'echo finally done' | ||
params: | ||
- name: path | ||
value: README.md | ||
workspaces: | ||
- name: source | ||
volumeClaimTemplate: | ||
spec: | ||
accessModes: | ||
- ReadWriteOnce | ||
resources: | ||
requests: | ||
storage: 16Mi |
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